Tower or pole.



F. MILLIKEN.

TOWER. 0R POLE. APPLICATION FILED IFBB.v 29, 1908.

923,557. Patented June 1, 1909. l

v E'. MILLIKEN.

TOWER 0R POLE.

APPLIUATION FILEDV PEB. 29, 190s.

- Patented June 1, 1909.

2 SHEETS-SHEET 2.

A TTUHNE YS I ro'srrn MILLrKEN; or New YoR1 ,N..Y.

. .specification 'of Letters Patent,

TOWER on POLL.

.., Pasantes June' 1, 190s.

" Application IedFehruary 2 9, 1908. 'serial No. 18,429

i To all whom'fi may concmf- Be it .known that I, Fos'rnn citizen of the United States, anda-resident' ot the city of NewfYork,fborough` of Man-fhattan, fin the county'and State of New York, have invented a .new land ImprovedV Tower or Pole, of whichtlie' following is afull, clear, and exact 'description`.

Tliisinvention is' an improvelrient in structural steel poles or towers, for electric' transmission cablesfas' are designedto conduct 'electricity from the place of generation Y L0. distant points. The polesfor this 'pur- .poseare generally4 placed :Lf-.considerable distance apart in order t'o econonii'zejin construction as much as is feasible, an'daccordf' ingly each pole' is subjected to severe strains i of .varying natures; such stra1ns,.ffor' ex# ample, asv those due to the :dea .d load. of the.rwires ,"-.cables, or.-othe r form of condoctors-i whichlexrt a downward. force; 'the windxwhic'h, is in adirection crosswise of4A the wires, -tends to overturn` the pole, and, 1f 'om sbstantlal alinement therewith, causes the. wires tdweav'e, z'. e., move 'up anddl'own' 'inthe formoffwaves, tending to vraclrtlie' I pole; `and= by the` StringingA off the wires, L whlch is performed by stretching one wire principally. .r composed. of= 'relatively light Vliieh hasbeen found in practice ..tofelfeetuallyrresist the several strains above' enumerated, .and it consists generally of a. fpyramidal...pedestal portion, iand a tower A. angle-iron,

at a t`inie,"si1bjectin'g the pole to "'twisting` or.' torsional-strain; tending to cork-screw it. l have produced-la structural-steel pole,

having appljoxinatelnl #parallelV opposite' l'faces rising froin the p edestaliportion, `'and provided with cross arms vat intervals ofits length fo'rcarrying the trarsmlsslon cables.

The .sidefaces of thel pedestal-portion. o f l"the pole' are 'each-.composed of. two trus'sesliav-l .their tesbeams arranged atv 'the 'corners .ofthe andfrigidlyjconnet'd at the' junction of. tliirjtrssgbnis, and, 'with each. Sie@ aanpassingen-ign@ buiging form.. posedof :corner posts4 rigllattice. braees,'

for the transIniSSiD- G a several poles vtog'` t tlii ar'.. yan-auxiliary cable.. Reference 'is'ft'be had; "to the' ceolnpany* ingl drawings forniing-fagpartfoftlilsfspecllconstruction vshown in Fig.`9, looking direction crosswise of the .crossfarmsr-f'i`1gm b eglsl .provided y.with L 1g. o. The trusses are reinforced by .queen.

a pyrarnidol peinlig vSlrig'g to j connect. the

'ence indicate.correspondinglparts in all views.

Figure 1 is aside elevatioiifof ajfpole o'r'f tower embodying 'my invention; Fig. .2,is' t .also 'a side elevation, looking at'tlie pole'-irr60' a direction at right-ingles to that of Figzflg".

l `ig. 3 is a cross-section'of thefpole on the' line of Fig. l, lshowing one of'tlie'cross.

arins in plan Fig', lis a crosslsection'ofthe pole on tlielineA-'LlofgFig l; Fig.'5"is,a 6.5.

.cross-sectionof the pcie on the -lineof Figl; 'Figi 6 is ragnientary View 'on any' enlar scalo, Aor tbe connection between two. of if i trusses .which formons `side fac'e of the prainidal pedestal; Eig.. 7. is a 'View' 70 partly in section, showing tlie connectionof. one or' .the'stnbsorlegs o f the pole-anditsl`4 anchoring late;l Fig.' a plan ofthe .construction sioirninliig. 7; Fig. 9 illustrates V' in side eleva-lion the connection between the' 7 5 tower of the pole andits peak'; Figyl() isa' corresponding fragmentary view of the tower.

at the middlecro'ss-arm; Fig'. llis a view at.

the center of one of the cornerposts ortiei.

beams of the .pyrai'iiidal pedestal; Fig. .12' is' 8D a similar lview, offoneof the tie-bealnsat-jaf f point lower down; Fig. 1 'isa' ,vlevv @fifth .14 .is a. view 'of the construction" 'shown in'. 85 Fig` l0,.looki1 1g .in adirection" at i'iigglit.-angles to the eross-armg AEig. l5. is a viewlillustrat- 5 7 ingfone of theA connections at thecorner of. tliepole between the pyramidal pedestal and' "the tower; Fig. 16 .is a view showing tlie`eon--- 9i) neetioir between one ol the.' trusses and its' supporting or stub; and Fig.- 17 Vis a frag!" nienlary view of the tower peak. 1 "The pole'orf tower proper is inade up 'ofja pyrainidal lower portion and .an upper 'pori 95 tonofu-nform eo1 istruction, which, for the purpose of .convenience of description I re-' specti'vely terni' the pedestal 'and vthe tower-Q -Qllacliside face' of 'tire' pedestal is composedf *o f- 'two .trusses con''slsting` o futle-bearns 20,.11912' formingytfne corners" of. the pedestalfxand' truss-be`an1s2l rwhich are. joined'togetherby api-ate 22,-as best shown-intbedeta1l View,

posts 23, substantially, equally spaced, and flot by diagonal braces ,24,con1iicting 'ctie-J beamsand truss-beams at 'the pontsof intersection wit'h the posts.. This construction retie-beams lare duces 'theunsupported lengthgoffthe. (ibrner.

angle which' is in com ression, thus 'getting-. L

{.Itwill' be. seen 'from'- the several enlarged fdetailj views thatfthe parts 'of the pole are 'boltedJt-ogether, which permits of .the pole bei-ng` 'disassembledAv and` packed vin a small' x space forshipment. tothe point' oferection. -Also, thecnstlfuctionfof' the poleinvQlVes 4the.duplication of many parts', which isob-x.' viiously a desirable'featurq'inits manufaci tur'e,' shipment `and"assembling. AInorder "that .the vtiebeams g may not 'be too long .for

from"thisfangle its f l strength. -Each 'of 'thetie-.beams is extended belowitsrespetive. truss. to provide legs `or.stubs25, .andthelf rovided at -t'heir lower lex-1.' trenntes with 'eet 26, in thenature of chaiinel-bars,' which o crate toanclwr the stubs orlegsof thep e'- in the greund.'

. The towerot the pole has approx-nnaitelyi,'` para1lel-oppositeffaces and 'ismade =upof. corner" posts 27;, vrigidly connected 'together' by lattice 'braces 28, wlth the. lowefbasud l'naces-28a .extending to and connected-with the truss-'beams fof the adjacent of trusses; as 'clearly shown Figs. and- 2. The

braces 28a relieve. theup'per truss beaxnslof partoftheir compression when 'the' poleis under a torsional strain. Thecnnection be-f tween thev pedestal .and the tower'fisj best illustrated'i1'1-- Fig. 15,'and the top of'the lat.v ter is provided with apyra'midal peak ,29. having means atits vertex for .the attache.. nient of 'an auxiliar cablef30,'an d vis further provided with a. numbe `r offeross-.arms 31 arranged at suitable intervals of itslength, in

' the present case three o f's'uchA armsy being shown7 which'a're respectively Yplaced at the" bottoni, atitheV top, and at an intermediate port-ion of the tower. These Across-arms, as best shown .1n Fig. 3,. are of truss construction, of expanded width atthe center t-o closely t around the tower, and have struts 32 to abut against the opposite sides of the tower, and diagonal brace-bars arranged between these'struts, This manner of brac-v ing serves to provide a construction capable of efl'ectually reslsting torsional strains, as

when lthe wires are strung. At the outer end of each lcross-arm' suitable hangers are rovnled for suspending the transnnssion ca les or wires Bet.

'as win be seen from ings. 4 and 5, thetajacenttrusses of 'opposite sides of the py`` ramidal 'pedestal are rigidly connected to-' ether1 by braces 35, extending across the corners, and at the' points where the trussbeamsl of' the trusses 'are connected together,

cross-bolts or rods 36 extend through the plates 22 and operate to hold the pedestal in shape. lt will also be seen from these'viewsA that the trussesof each 'face 'of the pedestal do not lie in the. sameplane, but in planes which make with each other an anglesllghtlyless than one hundred and eighty degrees at the inside of the pole, thus giving to the faces of the pedestal a bulging form, AThis arrangement o the trusses places them in-a plane more in oppositionto a torsional or twisting strain. When such a strain is placed on the pole the upper truss-beams are in compression, and l have found that-l a portion of this strain on these beams could be transmitted to the tie-beams by extending the queen posts 23 directly above the plates 22.., entirely-jacross each faceio'f' the .pedestal s. one piece,.as'. i1ndicatedat 37- in Figs. -1

shipment- I make each of them of two pie ces' beltedtogether',v as shown. in Fig. 1l, and' 'also n alieithe legs orstubs 2 5 ofthe-pole' separable' andbolt .thesame to the 'tierbeams, 'as shown in Figfl.

Having: Ithus described invention, I.

'.c'larn .as new'gand. desire-t0. 4secure by Letters 'Patent .pole havin a -pyrainidallpedestal lportim', each side face of which' is conf sti-noted of ,twotrusses having their tiebeams 4arrangedat the corners ofthe pedestal andE rigidlyjconnected at thejunction of their truslrleamsfand withthe trusses of each. side face-lying vin planes which make arranged intermediate-the length w i dt l1 of the side'face..

-an. vangle with each. other sligh'tlyless than tructural.V i'rori haii/ing l A po1e.-havingf a pedestal."

portion, each. side' tface fof 'which is; efon'- vstructed'-V of two trusses Y"having their 'tiely `beal'nsarran ed at thecorners pif-the pedestaland rii'dly connected atthe--junction of .their truss-beams, and I with each iside face' having a lightly .bulging formi- 4 portion,

beams arrangedfat the corners of the ing 51118811 posts and diagonal braeesfanda sft -igidly connected together vwi lattige races.' y

'tower carried 1 on j the pedestal' cemprisi-n corner 5. A structural pole-having" a `py-f.

.ramidal 'pedestalfportiom a .tower port n; carriedby the= pedestal portion, 'of ap'proinn matelyuniformlcross .sectional area, and

Cross-arms a'rran'ged4 at intervals gt the- ,tow'er portion o the pole.; of expanded.

isconstructed of' two trusses having their* 413C tie-beams arranged 'at/'fthe corners of the estal @11d lrigidly connectedat the' junction of their trussfbeams,.sa1d trusses 4'each hav-uv pmhslal and rigidly Connected at the iion of 4dieu' l'rnssj. hean'ls, and liracos` vxlrmlingY between the ronneotions ol the truss hoaina which li@ in adjacent faros oi tho' lio-beams arranged at rho Corners of the;

pedestal and rigidly conne@ ed ai" the june lion of their truss-beams, braces arranged .across the. corners between adiaren: irnsses lying` in flil'erent favos of th@l pmlotal. anfl cross-rods extending through the poilwal i j ai the corners and connectrcl at rhs joining` log'cher the connected portions of the lirusss heainsin opposite facrs 0i' the pedestal.

S. )L strnclural Stor-l pole having a perl anal portion rho side faces of which aro om tracked of trusses, and a tower por'ion rising from tho licclosl'al portion, rho si lo 'Fac or which aro provided with lalico bravas will, du; lower of Sa'ul braves connected to plaralilj; of' plain-s forming; in connection i naming through [ha oornor a p.'ianii lai por' ated o' having their tio liu-mns arranged 1 il o cornrrs and nonno al an ihn junction o1 ihoi r mams lamina, and with lli y lower irons lroalnri oli' oarh Sido *'L'nc, mal; an angle Willi nach other ilil'ercn lromlhe anglo l mail@ hy ihrumier rnsfs beams,

l nauw lo this soefilicnion in 'the Uri i. i L two subscribing :xml reinforcing the upper t'aSs-hszuns of;

ingv :silla: 'faros'. willi iaih sido Faro lyingV in a il. [i polo haring a pyrainiihll por on, 1fach sido *faire of which is -conkrucitecl of two l'rnsbfs haring' their tio beams avra juuclon o'l their from beams, and with the lower russ brani of ons of ih@ 'fri in one sirio face of the pole lying at. anangle to the upper ".russ beam of the oll er trims lyi in lli@ saine side fac@ oi lh@ polo.

ln tos'iinony livr-@of lV havo signifi my enne. ol' 

